Radio apparatus



Nov. 1, 1932 P. s. HASELTON RADI O APPARATUS Filed Feb. 16 1925 INVENTOR Patented Nov. 1, 1932 PATENT omcs PAGE s. HASELTON, or EVANSTON, ILLINOIS n-Amo APPARATUS Application filed February This invention relates to radio and 'acousti-' cal apparatus and particularly to improvements, in the construction of antennae and also improvements in the construction of @sound amplifiers or loud speakers of the type used for example in'connection with radio telephone receiving apparatus.

In accordance with this invention in one of its forms a radio receiving system is proiuj'vided having a rotatable antenna which may be incorporated as a unitary structure with and mounted upon the loud speaker or sound emitting device of the system.

Various objects and advantages of the in- 181 vention will be apparent from the following description and claims taken in connection with the accompanying drawing, in which Figure 1 is a side elevational view of a socalled cone type radio loud speaker, pro- 90 vided with an antenna and embodying my invention, and,

Figure 2 is a sectional View taken through one of the conical diaphragms of the device of Figure 1.

2 The device as shown in Figure 1 may comprise a base member upon which a bracket member 11 may be pivotally mounted in any desired manner, as at 12. The bracket 11 may be provided with an operating han- .dle 13 by which it may be readily rotated or turned in the desired direction. The bracket may also be provided with an indicator as at 1 1 cooperating with a scale 15 fixed upon the base 10. The indicator and scale 35. permit the device to be accurately adjusted or readjusted to face in any desired direction.

The bracket 11 should preferably be formed of non-conductive material such as a phenolic condensation product in order to avoid distortion of the radio waves. A frame member 16 may also be integrally formed with the bracket 11. A suitable electrical-sound translating device 17 may be supported within the frame 16.

A pair of abutting conical diaphragms 18 and 19 may be mounted as shown upon the frame 16. Sound impulses from the translating device 17 may be imparted to the diaphragms in any known manner as by a rod 16,1925. Serial No. 9,593.

extending to the apex of the cone 19 and termi-nating in an adjusting nut 20.

As shown-in dotted lines in Figure 1' and as illustrated in Figure 2, a conductor comprising for example an antenna, preferably of the closed loop type and of a shape gener ally corresponding or conforming to that of the sound emitting member, may be mounted substantially concentrically with and if desired within the conical diaphragms 18 and 19. As illustrated, the conductors of this antenna may take the form of a spiral ribbon V of metallic foil, such as tin or copper foil 21. Convolutions formed by this foil may be fixed in spaced relation on the inner side of the I cones 18 and 19 by the use of shellac or other insulating adhesive. One end of the spiral ribbon may be brought to a terminal post as at 22 while the other end may extend through a perforation 23 in the diaphragm 19 to the outer face of the diaphragm and then along the faces of the diaphragms to a terminal post 24-. a v

In the above described manner the conductor wires of a loop antenna may be applied to the sound radiating diaphragms in such form that interference with the me-" chanical functions of the diaphragm will be avoided. At the same time, a loop antenna will be provided, the turns of which 0"-' are positioned substantially in verticalplanes.

It will be observed that'a single supporting member is thereby utilized for two purposes and at the same time a pivoted rotatable loop v V antenna is incorporated in a unitary structure with the sound radiating device. The pivoting support and the operating handle 13 permit the antenna to be turned to obtain maximum absorption of radiant energy from any desired direction with substantially minimum interference from radiant energy propagated from other directions. i

It is also apparent that a very efficient lightweight form of antenna conductor is p provided by the use of the ribbon of metallic 9 foil since a large surface area is made available. This form of conductor is very flexibleand accordingly may be easily applied and offers substantially no dampening action to the vibrating diaphragms. In the device of Fig. 1 the metallic foil should preferably be sufiiciently thin to be inca ab e of selfsup rt. Such foil may be rea ily supported in e desired position to form the conductors of an antenna merely by the use of adhesive 5 material for pasting the ribbon in position on the desired sup ort. Antenna, conductors as abovadeacribe may also be conveniently mounted on various types of loud speakers and supports other than those illustrated. In the above described IIJDdifiGfltiOhg. the. antenna conductors, if desired, may be im-, bedded within the sound emitting member. In this way, the sound emitting member may be formed with the antenna and will serve to permanently hold and insulate the conductors thereof in their desired relation.

In. eachof the above described embodimentsof theiinventien it will be noted that a .very: compact arrangement is made possible y positioning or supporting the antenna substantially concentrically with the sound emit-- tingmember; The antenna is of a configuration corresponding generally to that of the ermaid emitting mem er and accordingly the two associated devices require substantially o the space of one and yet the antenna may be ee-1y turned to the desired angle.

If desired, the conductive foil may be cnimped throughout its length as indicated in. Fig. 2. Such crimping eliminates the gOflsib-llity of tearing the foil incase the iaplu: or other supporting base becomes diatom 85-. Iikie not intended that the invention be limited to the specific embodiments herein described and. somewhat schematically illustrated since after understanding the inventiomitwill be understood that the invenmtiolmisalso capable of many other variations and modifications coming within its scope asset forth in the following claims.

What I claim'as new and desire to se cum by: letters Patent of the United States Mist.

ls lmcombination, a sound emittingvibratosy' hragm, and means for vibrating Said-dial) ragm, said diaphragm carrying an elwated flexible metallic conductor formingazpart of the circuit or circuits for ener-,

gizing said. means for vibrating the dia- 281i combination, a sound emitting vibradiaphragm, and means for vibrating said: said diaphragm carrying a spinlly arramged conductor forming a part of the circuit or circuits for energizing said moansfor vibrating the diaphragm.

: v 3. Incombination, a sound emitting vibratory diaphragm, and means for energizing saididiaphragm, said diaphragm carrying on! ormore convolutions of a highly flexible metallic conductor closely conforniative to th}: surface of the diaphragm and adapted to I,

have currents induced therein for efi'ecting said energizing means.

4. In radio receiving apparatus, the combination of an antenna comprising one or more turns of a conductor, and a reproducer of the signal energy received on said antenna, said reproducer having a diaphragm, the said antenna being integrally formed with the reproducer diaphragm.

5. In radio receiving apparatus, the combinationoiianantenna com rising one or more turns of a metal foil con uctor, and a reproducer of the signal energy received on said antenna, said reproducer havin a diaphragm, the said antenna being integrally formed with. the reproducerdiaphragm.

In witness whereof, I have hereunto sub scribed my name.

PAGE S. HASELTON. 

